From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.bugs Subject: bug#42931: 27.1; json-pretty-print-buffer on ~2MB line causes core dump Date: Wed, 19 Aug 2020 18:18:38 +0300 Message-ID: <831rk2eka9.fsf@gnu.org> References: <0b9da4d7-ca24-8e00-d49f-7630e42abe89@orcon.net.nz> <87364i2039.fsf@gnus.org> Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="24626"; mail-complaints-to="usenet@ciao.gmane.io" Cc: psainty@orcon.net.nz, 42931@debbugs.gnu.org To: Lars Ingebrigtsen Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Wed Aug 19 17:19:46 2020 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane-mx.org Original-Received: from lists.gnu.org ([209.51.188.17]) by ciao.gmane.io with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1k8PsQ-0006K4-5H for geb-bug-gnu-emacs@m.gmane-mx.org; Wed, 19 Aug 2020 17:19:46 +0200 Original-Received: from localhost ([::1]:53362 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1k8PsP-0006HE-7G for geb-bug-gnu-emacs@m.gmane-mx.org; Wed, 19 Aug 2020 11:19:45 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:33470) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1k8Pri-0005Mt-NP for bug-gnu-emacs@gnu.org; Wed, 19 Aug 2020 11:19:02 -0400 Original-Received: from debbugs.gnu.org ([209.51.188.43]:57449) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1k8Pri-0008Be-E8 for bug-gnu-emacs@gnu.org; Wed, 19 Aug 2020 11:19:02 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1k8Pri-0007A5-A7 for bug-gnu-emacs@gnu.org; Wed, 19 Aug 2020 11:19:02 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Eli Zaretskii Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Wed, 19 Aug 2020 15:19:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 42931 X-GNU-PR-Package: emacs Original-Received: via spool by 42931-submit@debbugs.gnu.org id=B42931.159785033627510 (code B ref 42931); Wed, 19 Aug 2020 15:19:02 +0000 Original-Received: (at 42931) by debbugs.gnu.org; 19 Aug 2020 15:18:56 +0000 Original-Received: from localhost ([127.0.0.1]:40761 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1k8Prb-00079d-LO for submit@debbugs.gnu.org; Wed, 19 Aug 2020 11:18:55 -0400 Original-Received: from eggs.gnu.org ([209.51.188.92]:51540) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1k8PrZ-00079R-Sg for 42931@debbugs.gnu.org; Wed, 19 Aug 2020 11:18:54 -0400 Original-Received: from fencepost.gnu.org ([2001:470:142:3::e]:50059) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1k8PrU-0008Ap-FM; Wed, 19 Aug 2020 11:18:48 -0400 Original-Received: from [176.228.60.248] (port=3661 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_256_CBC_SHA1:256) (Exim 4.82) (envelope-from ) id 1k8PrT-0005li-Rv; Wed, 19 Aug 2020 11:18:48 -0400 In-Reply-To: <87364i2039.fsf@gnus.org> (message from Lars Ingebrigtsen on Wed, 19 Aug 2020 16:15:38 +0200) X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-BeenThere: bug-gnu-emacs@gnu.org List-Id: "Bug reports for GNU Emacs, the Swiss army knife of text editors" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Original-Sender: "bug-gnu-emacs" Xref: news.gmane.io gmane.emacs.bugs:185627 Archived-At: > From: Lars Ingebrigtsen > Date: Wed, 19 Aug 2020 16:15:38 +0200 > Cc: 42931@debbugs.gnu.org > > Phil Sainty writes: > > > On my system, Emacs hangs for quite a while and then core dumps. > > I can confirm that this leads to a segmentation fault (on Debian). > > [Current thread is 1 (Thread 0x7fbbb1c04000 (LWP 2154403))] > (gdb) bt > #0 raise (sig=) at ../sysdeps/unix/sysv/linux/raise.c:50 > #1 0x000055d08b0a0ac9 in terminate_due_to_signal > (sig=sig@entry=11, backtrace_limit=backtrace_limit@entry=40) at emacs.c:408 > #2 0x000055d08b0a0f5f in handle_fatal_signal (sig=sig@entry=11) > at sysdep.c:1786 > #3 0x000055d08b19bf9d in deliver_thread_signal > (sig=sig@entry=11, handler=0x55d08b0a0f54 ) > at sysdep.c:1760 > #4 0x000055d08b19c019 in deliver_fatal_thread_signal (sig=11) at sysdep.c:1883 > #5 handle_sigsegv (sig=11, siginfo=, arg=) > at sysdep.c:1883 > #6 0x00007fbbb530d140 in () > at /lib/x86_64-linux-gnu/libpthread.so.0 > #7 0x000055d08b1f7a43 in compareseq > (xoff=xoff@entry=897, xlim=xlim@entry=17383858, yoff=yoff@entry=1353, ylim=ylim@entry=25500750, find_minimal=false, ctxt=ctxt@entry=0x7fff5bfa5610) > at ../lib/diffseq.h:472 > #8 0x000055d08b1f7d94 in compareseq (xoff=, > xoff@entry=897, xlim=xlim@entry=17383882, yoff=yoff@entry=1353, ylim=ylim@entry=25500806, find_minimal=false, ctxt=ctxt@entry=0x7fff5bfa5610) > at ../lib/diffseq.h:510 looks like stack overflow? I guess the recursive nature of compareseq is got to cause this at some point?